708582

Appears in sequences

• Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^12 = I.at n=12A166468
• Number of idempotent 6X6 0..n matrices of rank 5.at n=7A224337
• Expansion of 1/sqrt((1-x^7)^2 - 4*x^2).at n=22A383569